Compound a
[医] 化合物A,11-脱氢皮质(甾)酮
🧩 词语组成解析
🗣️ 情景例句
I have an announcement to make.
我要宣布一件事。
A good conscience is a continual feast.
白日不做亏心事，夜半敲门心不惊。
But none of them has been turned to stone yet!
但到目前为止还没有一个变成石头呢！